todolist.java

import java.util.ArrayList;
import java.util.Scanner;

public class ToDoList {
    private static ArrayList<String> tasks = new ArrayList<>();
    private static Scanner scanner = new Scanner(System.in);

    public static void main(String[] args) {
        boolean running = true;

        while (running) {
            System.out.println("To-Do List Application");
            System.out.println("1. Add Task");
            System.out.println("2. View Tasks");
            System.out.println("3. Remove Task");
            System.out.println("4. Quit");
            System.out.print("Enter your choice: ");

            int choice = scanner.nextInt();
            scanner.nextLine(); // Consume the newline character

            switch (choice) {
                case 1:
                    addTask();
                    break;
                case 2:
                    viewTasks();
                    break;
                case 3:
                    removeTask();
                    break;
                case 4:
                    running = false;
                    break;
                default:
                    System.out.println("Invalid choice. Please try again.");
            }
        }

        System.out.println("Goodbye!");
        scanner.close();
    }

    private static void addTask() {
        System.out.print("Enter the task to add: ");
        String task = scanner.nextLine();
        tasks.add(task);
        System.out.println("Task added: " + task);
    }

    private static void viewTasks() {
        System.out.println("Tasks in the to-do list:");
        for (int i = 0; i < tasks.size(); i++) {
            System.out.println((i + 1) + ". " + tasks.get(i));
        }
    }

    private static void removeTask() {
        viewTasks();
        if (tasks.isEmpty()) {
            System.out.println("The to-do list is empty.");
            return;
        }

        System.out.print("Enter the number of the task to remove: ");
        int index = scanner.nextInt();
        scanner.nextLine(); // Consume the newline character

        if (index >= 1 && index <= tasks.size()) {
            String removedTask = tasks.remove(index - 1);
            System.out.println("Task removed: " + removedTask);
        } else {
            System.out.println("Invalid task number. Please try again.");
        }
    }
}